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0fe3fd01dd
The compiler actually doesn't need any functional changes for this: Sema does reification based on the tag indices of `std.builtin.Type` already! So, no zig1.wasm update is necessary. This change is necessary to disallow name clashes between fields and decls on a type, which is a prerequisite of #9938.
59 lines
1.9 KiB
Zig
59 lines
1.9 KiB
Zig
const std = @import("std");
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const builtin = @import("builtin");
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const testing = std.testing;
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const expect = testing.expect;
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const expectEqualStrings = testing.expectEqualStrings;
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test "tuple declaration type info" {
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if (builtin.zig_backend == .stage2_aarch64) return error.SkipZigTest;
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if (builtin.zig_backend == .stage2_arm) return error.SkipZigTest;
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{
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const T = struct { comptime u32 align(2) = 1, []const u8 };
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const info = @typeInfo(T).@"struct";
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try expect(info.layout == .auto);
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try expect(info.backing_integer == null);
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try expect(info.fields.len == 2);
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try expect(info.decls.len == 0);
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try expect(info.is_tuple);
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try expectEqualStrings(info.fields[0].name, "0");
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try expect(info.fields[0].type == u32);
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try expect(@as(*const u32, @ptrCast(@alignCast(info.fields[0].default_value))).* == 1);
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try expect(info.fields[0].is_comptime);
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try expect(info.fields[0].alignment == 2);
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try expectEqualStrings(info.fields[1].name, "1");
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try expect(info.fields[1].type == []const u8);
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try expect(info.fields[1].default_value == null);
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try expect(!info.fields[1].is_comptime);
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try expect(info.fields[1].alignment == @alignOf([]const u8));
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}
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}
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test "Tuple declaration usage" {
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if (builtin.zig_backend == .stage2_aarch64) return error.SkipZigTest;
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if (builtin.zig_backend == .stage2_arm) return error.SkipZigTest;
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const T = struct { u32, []const u8 };
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var t: T = .{ 1, "foo" };
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_ = &t;
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try expect(t[0] == 1);
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try expectEqualStrings(t[1], "foo");
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const mul = t ** 3;
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try expect(@TypeOf(mul) != T);
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try expect(mul.len == 6);
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try expect(mul[2] == 1);
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try expectEqualStrings(mul[3], "foo");
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var t2: T = .{ 2, "bar" };
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_ = &t2;
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const cat = t ++ t2;
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try expect(@TypeOf(cat) != T);
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try expect(cat.len == 4);
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try expect(cat[2] == 2);
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try expectEqualStrings(cat[3], "bar");
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}
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